Highly sensitive low-temperature low-field colossal magnetoresistance in screen printed La0.63Y0.07Ca0.30MnO3 thick films

Authors
Hossain, AKMA Cohen, LF Berenov, A Driscoll, JLM
Citation
Akma. Hossain et al., Highly sensitive low-temperature low-field colossal magnetoresistance in screen printed La0.63Y0.07Ca0.30MnO3 thick films, MAT SCI E B, 83(1-3), 2001, pp. 79-83
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
83
Issue
1-3
Year of publication
2001
Pages
79 - 83
Database
ISI
SICI code
0921-5107(20010621)83:1-3<79:HSLLCM>2.0.ZU;2-A
Abstract
Thick films of La0.63Y0.07Ca0.30MnO3 were fabricated on (100) oriented sing le crystal LaAlO3 (LAO) and on polycrystalline Al2O3 substrates by a screen printing technique. The films were sintered at 1200 degreesC in air and ox ygen atmosphere. All these thick films show a metal-insulator (M-I) transit ion at T-p1 similar to 220 K. For both substrates, the films sintered in ox ygen flow have slightly higher T-p1. The film on polycrystalline Al2O3 sint ered in oxygen flow shows 71% magnetoresistance (MR) at 220 K in the presen ce of an 8 T applied field. The salient feature of the colossal magnetoresi stance observed in these thick films is that low-temperature low-field MR i s highly sensitive than only Ca doped manganites. (C) 2001 Elsevier Science B.V. All rights reserved.